[2-3]雖然(ran)**近關(guan)(guan)于(yu)金(jin)屬氫(qing)的(de)(de)突破(po)研(yan)(yan)(yan)究(jiu)(jiu)(jiu)遇到很(hen)大(da)的(de)(de)質疑(yi)，但(dan)這篇文章的(de)(de)數(shu)(shu)據要(yao)扎實很(hen)多(duo)(duo)。來自倫(lun)敦帝國學(xue)(xue)(xue)(xue)院的(de)(de)物理學(xue)(xue)(xue)(xue)家HenryRzepa在(zai)(zai)把這項研(yan)(yan)(yan)究(jiu)(jiu)(jiu)和金(jin)屬氫(qing)的(de)(de)發現對(dui)比(bi)(bi)時表(biao)(biao)示：“這是(shi)(shi)(shi)(shi)更為可(ke)靠的(de)(de)科學(xue)(xue)(xue)(xue)，氦(hai)(hai)化合物是(shi)(shi)(shi)(shi)一項重大(da)突破(po)。”[3]這一研(yan)(yan)(yan)究(jiu)(jiu)(jiu)涉及中(zhong)(zhong)、美、俄(e)、意(yi)、德五(wu)國學(xue)(xue)(xue)(xue)者(zhe)。參(can)與的(de)(de)中(zhong)(zhong)國研(yan)(yan)(yan)究(jiu)(jiu)(jiu)單位還(huan)有(you)(you)北京高(gao)壓科學(xue)(xue)(xue)(xue)研(yan)(yan)(yan)究(jiu)(jiu)(jiu)中(zhong)(zhong)心、西北工(gong)(gong)(gong)業大(da)學(xue)(xue)(xue)(xue)、中(zhong)(zhong)科院固態物理研(yan)(yan)(yan)究(jiu)(jiu)(jiu)所和南(nan)京大(da)學(xue)(xue)(xue)(xue)。特(te)別值得一提的(de)(de)是(shi)(shi)(shi)(shi)，這一研(yan)(yan)(yan)究(jiu)(jiu)(jiu)開(kai)始于(yu)南(nan)開(kai)大(da)學(xue)(xue)(xue)(xue)研(yan)(yan)(yan)究(jiu)(jiu)(jiu)生XiaoDong在(zai)(zai)美國交換訪問期間，根據作(zuo)(zuo)者(zhe)貢獻介紹，XiaoDong設計了研(yan)(yan)(yan)究(jiu)(jiu)(jiu)工(gong)(gong)(gong)作(zuo)(zuo)、并展開(kai)了相關(guan)(guan)計算。XiaoDong已(yi)經在(zai)(zai)上海高(gao)壓科學(xue)(xue)(xue)(xue)研(yan)(yan)(yan)究(jiu)(jiu)(jiu)中(zhong)(zhong)心工(gong)(gong)(gong)作(zuo)(zuo)。[3]據了解，這一工(gong)(gong)(gong)作(zuo)(zuo)2013年就投(tou)稿Nature，但(dan)作(zuo)(zuo)者(zhe)與評(ping)審人(ren)就Na2He成健性(xing)質無法達成一致，改(gai)投(tou)NatureChemistry發表(biao)(biao)。當然(ran)，并不(bu)是(shi)(shi)(shi)(shi)所有(you)(you)人(ren)都被(bei)說服。愛丁堡大(da)學(xue)(xue)(xue)(xue)EugeneGregoryanz就認為XRD數(shu)(shu)據有(you)(you)待提高(gao)，**終還(huan)要(yao)看這一工(gong)(gong)(gong)作(zuo)(zuo)是(shi)(shi)(shi)(shi)否能(neng)被(bei)其他團隊所重復。不(bu)過(guo)，具備條件的(de)(de)實驗室全世(shi)界沒(mei)有(you)(you)幾家。[3]氦(hai)(hai)同位素編輯已(yi)知的(de)(de)氦(hai)(hai)同位素有(you)(you)八種(zhong)，包(bao)括氦(hai)(hai)3、氦(hai)(hai)4、氦(hai)(hai)5、氦(hai)(hai)6、氦(hai)(hai)8等，但(dan)只有(you)(you)氦(hai)(hai)3和氦(hai)(hai)4是(shi)(shi)(shi)(shi)穩定的(de)(de)，其余的(de)(de)均(jun)帶有(you)(you)放射(she)性(xing)。在(zai)(zai)自然(ran)界中(zhong)(zhong)，氦(hai)(hai)同位素中(zhong)(zhong)以(yi)氦(hai)(hai)4占(zhan)**多(duo)(duo)，多(duo)(duo)是(shi)(shi)(shi)(shi)從其他放射(she)性(xing)物質的(de)(de)α衰(shuai)變(bian)，放出(chu)氦(hai)(hai)4原子核(he)而來。而在(zai)(zai)地球上，氦(hai)(hai)3的(de)(de)含(han)量(liang)極少。氦(hai)(hai)不(bu)能(neng)靠將飽和液體冷卻到 零度而固化。濰城區比(bi)(bi)較好(hao)的(de)(de)氦(hai)(hai)氣(qi)廠家直銷

所(suo)以(yi)如果往氣(qi)(qi)(qi)(qi)(qi)球(qiu)(qiu)(qiu)和(he)(he)飛(fei)艇(ting)里充入(ru)氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)，氣(qi)(qi)(qi)(qi)(qi)球(qiu)(qiu)(qiu)和(he)(he)飛(fei)艇(ting)會冉冉升起，讓我們不(bu)(bu)用(yong)(yong)(yong)坐飛(fei)機(ji)也能(neng)實現飛(fei)到空中(zhong)的夢想(xiang)。因(yin)為(wei)氫氣(qi)(qi)(qi)(qi)(qi)和(he)(he)空氣(qi)(qi)(qi)(qi)(qi)混(hun)合(he)后會，所(suo)以(yi)氫氣(qi)(qi)(qi)(qi)(qi)球(qiu)(qiu)(qiu)和(he)(he)氫氣(qi)(qi)(qi)(qi)(qi)飛(fei)艇(ting)并(bing)不(bu)(bu)安全。氫氣(qi)(qi)(qi)(qi)(qi)飛(fei)艇(ting)曾經被當(dang)做大型載(zai)人(ren)飛(fei)行器使(shi)用(yong)(yong)(yong)，但是(shi)在1937年(nian)德國(guo)的“興(xing)登堡號”飛(fei)艇(ting)在美國(guo)著(zhu)陸時(shi)不(bu)(bu)慎著(zhu)火之后，它就徹底(di)退(tui)出了歷史舞臺。不(bu)(bu)過，熱氣(qi)(qi)(qi)(qi)(qi)球(qiu)(qiu)(qiu)和(he)(he)熱氣(qi)(qi)(qi)(qi)(qi)飛(fei)艇(ting)還(huan)是(shi)比(bi)(bi)(bi)較(jiao)安全的，而且飛(fei)行一次的花費也比(bi)(bi)(bi)較(jiao)便宜。液氦(hai)(hai)(hai)(hai)人(ren)造(zao)空氣(qi)(qi)(qi)(qi)(qi)潛(qian)水(shui)員(yuan)常常要(yao)使(shi)用(yong)(yong)(yong)氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)和(he)(he)氧(yang)氣(qi)(qi)(qi)(qi)(qi)混(hun)合(he)而成的人(ren)造(zao)空氣(qi)(qi)(qi)(qi)(qi)。這(zhe)是(shi)因(yin)為(wei)在水(shui)下(xia)(xia)的高壓(ya)(ya)環境下(xia)(xia)，氮氣(qi)(qi)(qi)(qi)(qi)會溶解在血(xue)液中(zhong)，當(dang)潛(qian)水(shui)員(yuan)上(shang)浮的時(shi)候壓(ya)(ya)力(li)減小，血(xue)中(zhong)的氮氣(qi)(qi)(qi)(qi)(qi)便紛紛逸(yi)出，形成氣(qi)(qi)(qi)(qi)(qi)泡(pao)堵塞血(xue)管，使(shi)潛(qian)水(shui)員(yuan)患上(shang)極為(wei)難受的“減壓(ya)(ya)癥(zheng)”。氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)在高壓(ya)(ya)下(xia)(xia)也難溶于水(shui)，所(suo)以(yi)用(yong)(yong)(yong)它來代替氮氣(qi)(qi)(qi)(qi)(qi)就可以(yi)解決(jue)這(zhe)個問題。不(bu)(bu)過如果我們沒(mei)有(you)(you)氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)，我們還(huan)可以(yi)用(yong)(yong)(yong)氖氣(qi)(qi)(qi)(qi)(qi)—它在高壓(ya)(ya)下(xia)(xia)也難溶于水(shui)。液氦(hai)(hai)(hai)(hai)保(bao)(bao)護(hu)氣(qi)(qi)(qi)(qi)(qi)氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)在電焊(han)、硅晶片生(sheng)產中(zhong)還(huan)可以(yi)用(yong)(yong)(yong)做保(bao)(bao)護(hu)氣(qi)(qi)(qi)(qi)(qi)，它可以(yi)隔絕氧(yang)氣(qi)(qi)(qi)(qi)(qi)，避免電焊(han)工(gong)件、單質(zhi)硅和(he)(he)氧(yang)氣(qi)(qi)(qi)(qi)(qi)發生(sheng)討(tao)厭的化學反應(ying)。據美國(guo)有(you)(you)關部(bu)門統計，2000年(nian)美國(guo)消耗的所(suo)有(you)(you)氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)中(zhong)，有(you)(you)18%用(yong)(yong)(yong)在了焊(han)接上(shang)，還(huan)有(you)(you)16%用(yong)(yong)(yong)作其他工(gong)業的保(bao)(bao)護(hu)氣(qi)(qi)(qi)(qi)(qi)。不(bu)(bu)過如果沒(mei)有(you)(you)氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)，氬(ya)氣(qi)(qi)(qi)(qi)(qi)一樣可以(yi)出色地完(wan)成服務，而且還(huan)便宜得(de)多。液氦(hai)(hai)(hai)(hai)低(di)(di)溫(wen)超導技術要(yao)說缺(que)乏氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi) 嚴(yan)重的后果。濰城區(qu)比(bi)(bi)(bi)較(jiao)好的氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)廠家直銷是(shi)人(ren)類發現臨界溫(wen)度比(bi)(bi)(bi)較(jiao)低(di)(di)的物質(zhi)。進行低(di)(di)壓(ya)(ya)放電時(shi)顯(xian)深黃色。

氦(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)常用(yong)(yong)于鎂、鋯、鋁(lv)、鈦(tai)等(deng)金屬焊接的保護氣(qi)(qi)(qi)(qi)。[1]6、其他方面：氦(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)可(ke)用(yong)(yong)作高(gao)真空裝置(zhi)、原(yuan)子核反(fan)應堆[5]在火(huo)箭、宇(yu)宙飛船(chuan)上(shang)(shang)用(yong)(yong)作輸送液(ye)(ye)氫(qing)、液(ye)(ye)氧(yang)(yang)等(deng)液(ye)(ye)體(ti)推進劑的加(jia)(jia)壓氣(qi)(qi)(qi)(qi)體(ti)。氦(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)還用(yong)(yong)作原(yuan)子反(fan)應堆的清洗劑，在海洋(yang)開發領域的呼吸用(yong)(yong)混(hun)(hun)合(he)氣(qi)(qi)(qi)(qi)體(ti)中，氣(qi)(qi)(qi)(qi)體(ti)溫(wen)(wen)度計(ji)的填充氣(qi)(qi)(qi)(qi)等(deng)。[5]氦(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)制(zhi)備(bei)方法(fa)(fa)1、冷凝法(fa)(fa)：天(tian)然(ran)氣(qi)(qi)(qi)(qi)提氦(hai)(hai)(hai)在工(gong)(gong)業(ye)上(shang)(shang)采用(yong)(yong)冷凝法(fa)(fa)該法(fa)(fa)工(gong)(gong)藝包括天(tian)然(ran)氣(qi)(qi)(qi)(qi)的預(yu)處(chu)理(li)凈化(hua)(hua)、粗氦(hai)(hai)(hai)制(zhi)取(qu)及(ji)氦(hai)(hai)(hai)的精制(zhi)等(deng)工(gong)(gong)序，制(zhi)得。[6]2、空分法(fa)(fa)：一般采用(yong)(yong)分凝法(fa)(fa)從空氣(qi)(qi)(qi)(qi)裝置(zhi)中提取(qu)粗氦(hai)(hai)(hai)、氖(nai)(nai)混(hun)(hun)合(he)氣(qi)(qi)(qi)(qi)，由(you)(you)粗氦(hai)(hai)(hai)、氖(nai)(nai)混(hun)(hun)合(he)氣(qi)(qi)(qi)(qi)制(zhi)純氦(hai)(hai)(hai)、氖(nai)(nai)混(hun)(hun)合(he)氣(qi)(qi)(qi)(qi)經分離及(ji)純化(hua)(hua)，制(zhi)得。[6]3、氫(qing)液(ye)(ye)化(hua)(hua)法(fa)(fa)：工(gong)(gong)業(ye)上(shang)(shang)采用(yong)(yong)氫(qing)液(ye)(ye)化(hua)(hua)法(fa)(fa)從合(he)成(cheng)氨尾氣(qi)(qi)(qi)(qi)中提氦(hai)(hai)(hai)。該法(fa)(fa)工(gong)(gong)藝是(shi)低溫(wen)(wen)吸附氮(dan)、精餾得到粗氦(hai)(hai)(hai)加(jia)(jia)氧(yang)(yang)催化(hua)(hua)除氫(qing)及(ji)氦(hai)(hai)(hai)的純化(hua)(hua)，制(zhi)得。[6]4、高(gao)純氦(hai)(hai)(hai)法(fa)(fa)：將。[4]氦(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)毒理(li)如果大(da)量(liang)(liang)吸入氦(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)，會(hui)造(zao)成(cheng)體(ti)內氧(yang)(yang)氣(qi)(qi)(qi)(qi)被氦(hai)(hai)(hai)取(qu)代，因而發生缺氧(yang)(yang)（呼吸反(fan)射(she)是(shi)受體(ti)內過量(liang)(liang)二氧(yang)(yang)化(hua)(hua)碳(tan)驅(qu)動(dong)，而對缺氧(yang)(yang)并(bing)不敏(min)感），嚴(yan)重(zhong)的甚(shen)至會(hui)死亡(wang)。另(ling)外，如果是(shi)由(you)(you)高(gao)壓氣(qi)(qi)(qi)(qi)瓶中直接吸入氦(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)，那么其高(gao)流(liu)速就會(hui)嚴(yan)重(zhong)地破壞肺部組織(zhi)。大(da)量(liang)(liang)而高(gao)壓的氦(hai)(hai)(hai)和氧(yang)(yang)會(hui)造(zao)成(cheng)高(gao)壓緊(jin)張癥狀(zhuang)Highpressurenervoussyndrome（HPNS），不過少(shao)量(liang)(liang)的氮(dan)就能(neng)夠處(chu)理(li)這個問(wen)題。大(da)量(liang)(liang)及(ji)長時間吸入氦(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)可(ke)導(dao)致腦損傷甚(shen)至死亡(wang)。

但限于(yu)適(shi)用(yong)條件尚不能規模化工(gong)業應(ying)用(yong)。隨著新(xin)材料、新(xin)技術(shu)的發(fa)(fa)(fa)展(zhan)，天然(ran)氣(qi)(qi)(qi)(qi)(qi)提(ti)(ti)(ti)氦(hai)(hai)(hai)(hai)技術(shu)不斷改進創新(xin)，吸(xi)附法、膜滲透法等(deng)提(ti)(ti)(ti)氦(hai)(hai)(hai)(hai)工(gong)藝發(fa)(fa)(fa)展(zhan)迅速，聯產法、聯合(he)(he)法工(gong)藝有著良好的應(ying)用(yong)前景，這些都為促進天然(ran)氣(qi)(qi)(qi)(qi)(qi)提(ti)(ti)(ti)氦(hai)(hai)(hai)(hai)技術(shu)的發(fa)(fa)(fa)展(zhan)提(ti)(ti)(ti)供了新(xin)的思路。[11-12]氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)純(chun)度(du)(du)(du)氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)工(gong)業氦(hai)(hai)(hai)(hai)項目(mu)名稱指標氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)純(chun)度(du)(du)(du)：≥99%氖(nai)（氫）、氧(yang)(yang)（氬）、氮、甲烷總含(han)(han)(han)(han)(han)量(liang)(liang)，%≤1水分含(han)(han)(han)(han)(han)量(liang)(liang)，**，≤-43℃氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)純(chun)氦(hai)(hai)(hai)(hai)項目(mu)名稱指標優等(deng)品(pin)一等(deng)品(pin)合(he)(he)格品(pin)氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)純(chun)度(du)(du)(du)，%≥氖(nai)含(han)(han)(han)(han)(han)量(liang)(liang)，ppm≤152540氫含(han)(han)(han)(han)(han)量(liang)(liang)，ppm≤357氧(yang)(yang)（氬）含(han)(han)(han)(han)(han)量(liang)(liang)，ppm≤355氮含(han)(han)(han)(han)(han)量(liang)(liang)，ppm≤101725一氧(yang)(yang)化碳，ppm≤111二(er)氧(yang)(yang)化碳，ppm≤111甲烷量(liang)(liang)，ppm≤111水分含(han)(han)(han)(han)(han)量(liang)(liang)，ppm≤101520氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)高純(chun)氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)純(chun)度(du)(du)(du)>，雜(za)質含(han)(han)(han)(han)(han)量(liang)(liang)（ppm）：O2≤，N2≤，CO≤，CO2≤，CH4≤，H2O≤，Ne≤；氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)超純(chun)氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)純(chun)度(du)(du)(du)>，雜(za)質含(han)(han)(han)(han)(han)量(liang)(liang)（ppm）：N2≤，O2≤，Ne≤，CO≤，CO2≤，THC≤，H2O≤。如果大量(liang)(liang)吸(xi)入氦(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)，會造成體內氧(yang)(yang)氣(qi)(qi)(qi)(qi)(qi)被氦(hai)(hai)(hai)(hai)取代，因而(er)發(fa)(fa)(fa)生(sheng)缺氧(yang)(yang)。

使得吸入氦(hai)(hai)(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)人說話尖聲細(xi)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)，就(jiu)好像舊時的(de)(de)(de)(de)(de)卡(ka)通(tong)人物一樣。[3]氦(hai)(hai)(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)化(hua)學(xue)(xue)性(xing)(xing)(xing)質(zhi)氦(hai)(hai)(hai)(hai)(hai)(hai)是單原子(zi)(zi)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)體，化(hua)學(xue)(xue)性(xing)(xing)(xing)質(zhi)不(bu)(bu)活(huo)潑。氦(hai)(hai)(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)一般不(bu)(bu)生成化(hua)合物，在低(di)壓放電管中(zhong)受激發(fa)可(ke)(ke)形成He+2、HeH等(deng)離子(zi)(zi)及(ji)分(fen)(fen)(fen)(fen)子(zi)(zi)。氦(hai)(hai)(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)應(ying)用(yong)領(ling)域氦(hai)(hai)(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)應(ying)用(yong)于(yu)**、科研、石化(hua)、制冷(leng)、醫療、半(ban)導(dao)(dao)(dao)體、管道檢(jian)漏(lou)、超導(dao)(dao)(dao)實驗(yan)、金屬(shu)制造、深海潛水(shui)、高精度(du)(du)(du)焊(han)接、光電子(zi)(zi)產品生產等(deng)。[4]1、低(di)溫(wen)冷(leng)源：利(li)用(yong)液(ye)氦(hai)(hai)(hai)(hai)(hai)(hai)的(de)(de)(de)(de)(de)℃的(de)(de)(de)(de)(de)低(di)沸點(dian)，液(ye)氦(hai)(hai)(hai)(hai)(hai)(hai)可(ke)(ke)以用(yong)于(yu)**溫(wen)冷(leng)卻。而(er)**溫(wen)冷(leng)卻技(ji)術在超導(dao)(dao)(dao)技(ji)術等(deng)領(ling)域有較(jiao)(jiao)的(de)(de)(de)(de)(de)應(ying)用(yong)，超導(dao)(dao)(dao)材料需(xu)要在低(di)溫(wen)（100K左右）中(zhong)才能(neng)(neng)表現(xian)出超導(dao)(dao)(dao)特性(xing)(xing)(xing)，大多數情況下只(zhi)有液(ye)氦(hai)(hai)(hai)(hai)(hai)(hai)能(neng)(neng)比較(jiao)(jiao)簡便地實現(xian)這樣的(de)(de)(de)(de)(de)極低(di)溫(wen)。超導(dao)(dao)(dao)技(ji)術在交通(tong)行業的(de)(de)(de)(de)(de)磁(ci)懸浮列車(che)，醫療領(ling)域的(de)(de)(de)(de)(de)核磁(ci)共(gong)振成像設備都有較(jiao)(jiao)大的(de)(de)(de)(de)(de)應(ying)用(yong)。2、氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)球充氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)：由于(yu)氦(hai)(hai)(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)密度(du)(du)(du)遠小于(yu)空(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)（空(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)密度(du)(du)(du)為(wei)，氦(hai)(hai)(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)密度(du)(du)(du)為(wei)），而(er)且化(hua)學(xue)(xue)性(xing)(xing)(xing)質(zhi)極不(bu)(bu)活(huo)潑，較(jiao)(jiao)氫(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)安(an)全（氫(qing)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)可(ke)(ke)以在空(kong)(kong)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)中(zhong)燃(ran)燒，可(ke)(ke)能(neng)(neng)會引起），氦(hai)(hai)(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)常(chang)(chang)用(yong)于(yu)飛船或廣告(gao)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)球中(zhong)的(de)(de)(de)(de)(de)充入氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)體。[1]3、檢(jian)驗(yan)分(fen)(fen)(fen)(fen)析：儀(yi)器分(fen)(fen)(fen)(fen)析中(zhong)常(chang)(chang)用(yong)的(de)(de)(de)(de)(de)核磁(ci)共(gong)振分(fen)(fen)(fen)(fen)析儀(yi)的(de)(de)(de)(de)(de)超導(dao)(dao)(dao)磁(ci)體需(xu)要利(li)用(yong)液(ye)氦(hai)(hai)(hai)(hai)(hai)(hai)降溫(wen)，氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)相色(se)譜分(fen)(fen)(fen)(fen)析中(zhong)氦(hai)(hai)(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)常(chang)(chang)作(zuo)為(wei)載氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)，利(li)用(yong)氦(hai)(hai)(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)滲(shen)透性(xing)(xing)(xing)好、不(bu)(bu)可(ke)(ke)燃(ran)的(de)(de)(de)(de)(de)特點(dian)，氦(hai)(hai)(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)還應(ying)用(yong)于(yu)真空(kong)(kong)檢(jian)漏(lou)，如氦(hai)(hai)(hai)(hai)(hai)(hai)質(zhi)譜檢(jian)漏(lou)儀(yi)等(deng)。4、保護氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)：利(li)用(yong)氦(hai)(hai)(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)不(bu)(bu)活(huo)潑的(de)(de)(de)(de)(de)化(hua)學(xue)(xue)性(xing)(xing)(xing)質(zhi)。通(tong)過對提氦(hai)(hai)(hai)(hai)(hai)(hai)技(ji)術的(de)(de)(de)(de)(de)分(fen)(fen)(fen)(fen)析介紹，低(di)溫(wen)冷(leng)凝法較(jiao)(jiao)為(wei)成熟，但能(neng)(neng)耗(hao)、成本較(jiao)(jiao)高。濰城區比較(jiao)(jiao)好的(de)(de)(de)(de)(de)氦(hai)(hai)(hai)(hai)(hai)(hai)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)廠家直銷(xiao)

氦(hai)氣(qi)廣泛(fan)應用于科(ke)研、石化、制冷、醫療(liao)、半導(dao)體。濰城區比較好的氦(hai)氣(qi)廠家(jia)直(zhi)銷(xiao)

如(ru)果大量吸入(ru)氦(hai)氣(qi)，會(hui)造(zao)成體內(nei)氧氣(qi)被(bei)氦(hai)取(qu)代，因而(er)(er)發生(sheng)缺氧（呼(hu)吸反射是受體內(nei)過(guo)量二氧化碳驅(qu)動，而(er)(er)對缺氧并不敏感），嚴(yan)重的(de)甚至(zhi)會(hui)死亡(wang)。另外(wai)，如(ru)果是由(you)高壓氣(qi)瓶中直接吸入(ru)氦(hai)氣(qi)，那(nei)么(me)其高流(liu)速就會(hui)嚴(yan)重地破(po)壞肺部(bu)組(zu)織。大量而(er)(er)高壓的(de)氦(hai)和氧會(hui)造(zao)成高壓緊張癥狀Highpressurenervoussyndrome（HPNS），不過(guo)少(shao)量的(de)氮(dan)就能夠處理這個問題。大量及(ji)長(chang)時間吸入(ru)氦(hai)氣(qi)可導致腦損傷(shang)甚至(zhi)死亡(wang)。在(zai)大部(bu)分(fen)薯(shu)條類包(bao)裝袋里也含有少(shao)量氦(hai)氣(qi)，不過(guo)不必擔心，沒有危(wei)害。濰城區比較好(hao)的(de)氦(hai)氣(qi)廠家(jia)直銷

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